The MBC entertainment program 'Infinite Challenge' member Jung Hyung Don was absent for a part of the episode because he was sick with pneumonia.

On the most recent episode of the popular MBC entertainment program 'Infinite Challenge,' which aired on October 2, 2015, Jung Hyung Don did not show up for the part of the episode because he was sick with pneumonia and had to rest. On the first half of the episode, the six members teamed up in three pairs. Ha Ha and Kwanghee, Park Myung Soo and Jung Joon Ha, and Jung Hyung Don and Yoo Jae Suk became teams and brainstormed for ideas. The three pairs presented two to three ideas for the future MBC entertainment program 'Infinite Challenge' episodes. After the lengthy presentation, fans and entertainment TV program producers voted on each idea, and Haha and Kwanghee's idea won the first place. Haha and Kwanghee were so happy their idea was voted the most, and were excited to make their idea unfold in reality. In related news, the MBC entertainment program 'Infinite Challenge' is one of the popular, long lasting entertainment programs in Korea. It features the Infinite Challenge members Ha Ha, Park Myung Soo, Yoo Jae Suk, Jung Joon Ha, and Jung Hyung Don.